Laser-welded profiles are usually welded without filler material from two or more material strips to form a special profile. The material strips, made of mild steel or stainless steel, is cut out of sheet metal or plate. The dimensional range of the material thicknesses goes from 3 – 40 mm (1/8” – 1-5/8”). And the bar length is up to 15 m (49ft). In laser welding, the contact surfaces of the steel strips are welded directly together without the material having to be chamfered beforehand. For this reason, weld seams are hardly visible even when the laser beam has to penetrate the material by 10 mm (3/8”) on each side.